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KMID : 0903520070500040295
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Journal of the Korean Society of Agricultural Chemistry and Biotechnology
2007 Volume.50 No. 4 p.295 ~ p.303
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Effects of a Combined Diet of Jerusalem Artichoke’s Inulin, Lotus Leaf and Herb Extracts in Obesity-induced White Rat with Fat Diet
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Lee Eun-Hye
Lee Ye-Jin
Choi Ok-Byung
Kang Sang-Mo
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Abstract
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A preliminary diet experiment utilizing Jerusalem artichoke’s inulin, lotus leaf powder, nettle pow- der and eucalyptus powder extract indicated that combining all four elements gave the most effec- tive result. Therefore, a study was conducted to evaluate the effectiveness of combined diet for weight loss. In this study, Sprague-Dawley, male white rats about 200 g in weight was fed with high fat diet for 8 weeks in order to induce obesity followed by 4 week administration of combined diet to look into the effect of the diet. After a total of 12 weeks of feeding, factors relevant to weight, blood, and lipid metabolism by liver in the body were researched and histologic change was exam- ined with optical microscope. In terms of weight change, both high fat diet group and regular diet group gained weight from high fat diet for 8 weeks compared to normal group. Then, for another 4 weeks, while normal group and high fat diet group kept gaining weight, combined diet group which was provided with high fat diet for 8 weeks, lost weight to the normal group level after 3 week administration of diet. However, after the 4th week of administration, the group weighted sig- nificantly less than the normal group and the efficiency of diet also significantly dropped. In the biochemical analysis of blood, total cholesterol, LDL-cholesterol, triglyceride, glucose, GOT, GPT, γ- GTP and creatine showed significant increase in high fat diet group and there was no significant difference between diet group and normal group except for GPT, γ-GTP and creatine. In the bio- chemical analysis of liver, there was significant increase in LDL-cholesterol, triglyceride of high fat diet group compared to normal group, while there was no significant difference in term of total cholesterol and HDL-cholesterol. Compared to normal group, diet group had higher HDL-choles- terol, while total cholesterol dropped significantly. There was no significant difference in terms of LDL-cholesterol and triglyceride. Besides, in high fat diet group, observation of histologic change in liver and change in ultrastructure showed volume increase of hepatic cell and severe fatty degen- eration in hepatic cell around hepatic vein. However in diet group, like normal group, no patho- logical change was observed in terms of cytoplasm, nucleus and capillary in hepatocyte and the alignment of hepatocyte had regularity thanks to the administration of combined diet. Therefore, combined diet utilizing Jerusalem artichoke’s inulin, lotus leaf powder, nettle powder and eucalyp- tus powder was proven to be an effective measure to prevent and improve obesity as a result of abnormal adipose deposition.
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KEYWORD
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Inulin, lotus leaf, nettle, eucalyptus, obesity, diet, lipid metabolism
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